Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

doi:10.1016/j.cjche.2020.05.014

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (11): 2881-2889.DOI: 10.1016/j.cjche.2020.05.014

• Energy, Resources and Environmental Technology • 上一篇下一篇

Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

Daqi Cao¹, Jingyi Jin¹, Qunhui Wang², Xin Song¹, Xiaodi Hao¹, Eiji Iritani³, Nobuyuki Katagiri³

1 Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Key Laboratory of Urban Stormwater System and Water Environment, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2 Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China;
3 Department of Chemical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aishi 464-8603, Japan

收稿日期:2020-02-09 修回日期:2020-05-07 出版日期:2020-11-28 发布日期:2020-12-31
通讯作者: Daqi Cao, Xiaodi Hao
基金资助:
This study was partially supported by the Beijing Outstanding Talents Training; Science and Technology Programs of the Beijing Municipal Education Commission (SQKM201710016001); the BUCEA Post Graduate Innovation Project; and the Beijing Advanced Innovation Center for Future Urban Design. The funding agencies did not influence the study design, data collection, analysis, and interpretation, report writing, or the decision to submit this article for publication.

Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

Daqi Cao¹, Jingyi Jin¹, Qunhui Wang², Xin Song¹, Xiaodi Hao¹, Eiji Iritani³, Nobuyuki Katagiri³

1 Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Key Laboratory of Urban Stormwater System and Water Environment, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2 Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, Beijing 100083, China;
3 Department of Chemical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya-shi, Aishi 464-8603, Japan

Received:2020-02-09 Revised:2020-05-07 Online:2020-11-28 Published:2020-12-31
Contact: Daqi Cao, Xiaodi Hao
Supported by:
This study was partially supported by the Beijing Outstanding Talents Training; Science and Technology Programs of the Beijing Municipal Education Commission (SQKM201710016001); the BUCEA Post Graduate Innovation Project; and the Beijing Advanced Innovation Center for Future Urban Design. The funding agencies did not influence the study design, data collection, analysis, and interpretation, report writing, or the decision to submit this article for publication.

摘要/Abstract

摘要： Recovery of alginate extracted from aerobic granular sludge (AGS) has given rise to a novel research direction. However, these extracted alginate solutions have a water content of nearly 100%. Alternately, ultrafiltration (UF) is generally used for concentration of polymers. Furthermore, the introduction of multivalent metal ions into alginate may provide a promising method for the development of novel nanomaterials. In this study, membrane fouling mitigation by multivalent metal ions, both individually and in combination, and properties of recycled materials were investigated for UF recovery of sodium alginate (SA). The filtration resistance showed a significantly negative correlation with the concentration of metal ions, arranged in the order of Mg²⁺ < Ca²⁺ < Fe³⁺ < Al³⁺ (filtration resistance mitigation), and the moisture content of recycled filter cake showed a marked decrease. For Ca²⁺, Mg²⁺, Fe³⁺, and Ca²⁺+Fe³⁺, the filtration resistances were almost the same when the total charge concentration was less than 5 mmol·L^-1. However, when the total charge concentration was greater than 5 mmol·L^-1, membrane fouling mitigation increased significantly in the presence of Ca²⁺ or Fe³⁺ and remained constant for Mg²⁺ with the increase of total charge concentration. The filtration resistance mitigation was arranged in the order of Fe³⁺ > Fe³⁺ + Ca²⁺ > Ca²⁺ > Mg²⁺. Three mechanisms were proposed in the presence of Fe³⁺, such as the decrease of SA concentration, change in pH, and production of hydroxide iron colloids from hydrolysis. The properties of recycled materials (filter cake) were investigated via optical microscope observation, dynamic light scattering, Fourier transform infrared, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. The results provide further insight into UF recoveries of alginate extracted from AGS.

关键词: Ultrafiltration, Recovery, Alginate, Membrane fouling mitigation, Multivalent metal ion, Cake property

Abstract: Recovery of alginate extracted from aerobic granular sludge (AGS) has given rise to a novel research direction. However, these extracted alginate solutions have a water content of nearly 100%. Alternately, ultrafiltration (UF) is generally used for concentration of polymers. Furthermore, the introduction of multivalent metal ions into alginate may provide a promising method for the development of novel nanomaterials. In this study, membrane fouling mitigation by multivalent metal ions, both individually and in combination, and properties of recycled materials were investigated for UF recovery of sodium alginate (SA). The filtration resistance showed a significantly negative correlation with the concentration of metal ions, arranged in the order of Mg²⁺ < Ca²⁺ < Fe³⁺ < Al³⁺ (filtration resistance mitigation), and the moisture content of recycled filter cake showed a marked decrease. For Ca²⁺, Mg²⁺, Fe³⁺, and Ca²⁺+Fe³⁺, the filtration resistances were almost the same when the total charge concentration was less than 5 mmol·L^-1. However, when the total charge concentration was greater than 5 mmol·L^-1, membrane fouling mitigation increased significantly in the presence of Ca²⁺ or Fe³⁺ and remained constant for Mg²⁺ with the increase of total charge concentration. The filtration resistance mitigation was arranged in the order of Fe³⁺ > Fe³⁺ + Ca²⁺ > Ca²⁺ > Mg²⁺. Three mechanisms were proposed in the presence of Fe³⁺, such as the decrease of SA concentration, change in pH, and production of hydroxide iron colloids from hydrolysis. The properties of recycled materials (filter cake) were investigated via optical microscope observation, dynamic light scattering, Fourier transform infrared, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. The results provide further insight into UF recoveries of alginate extracted from AGS.

Key words: Ultrafiltration, Recovery, Alginate, Membrane fouling mitigation, Multivalent metal ion, Cake property

Daqi Cao, Jingyi Jin, Qunhui Wang, Xin Song, Xiaodi Hao, Eiji Iritani, Nobuyuki Katagiri. Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials[J]. 中国化学工程学报, 2020, 28(11): 2881-2889.

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Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

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